[NEWS] Five D-Brief links: whales, bacteria, offshore platforms, Falcon Heavy, Denisovans

• D-Brief notes the discovery of a fossil of a four-limbed whale in Peru, dating 42.5 million years.
• D-Brief looks at how the bacterium Enterococcus faecalis morphed from normal gut bacteria to potentially fatal hospital-borne infection.
• D-Brief notes a proposal to build offshore platforms as habitat for fish and for birds.
• D-Brief notes how the Falcon Heavy is proving itself a vanguard of progress in spaceflight.
• D-Brief notes new evidence of there having been multiple regional populations of Denisovans, drawing from work in Indonesia.